Bagging-machine.



F. L. FURBUSH. BAGGING MACHINE. APPLICATION FILED APR. 30. 1914 1, 1 1 9,421. Patented Dec. 1, 1914.

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YHE NORRIS PETERS C13v PHOTO-LITHQ. WASHINGTON, D. C

F. L. FURBUSH. BAGGING MACHINE.

APPLICATION FILED APILBO, 1914.

Patented Dec. 1, 1914.

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THE NORRIS PETERS CO.. PHOTD-LITHQ, WASHINGTON. U. C

UTE STATES PATENT OFFICE.

FRANK L. FURBUSH, OF GRANITEVILLE, MASSACHUSETTS, ASSIGNOR T0 C. G. SARG-ENTS SONS CORPORATION, OF GRANITEVILLE, MASSACHUSETTS, A.

CORPORATION OF MASSACHUSETTS.

BAGGING-IVIACHINE.

Specification of Letters Patent.

Patented Dec. 1, 1914.

To all whom it may concern Be it known that I, FRANK L. FURBUsn, a citizen of the United States, residing at Graniteville, in the county of Middlesex and State of Massachusetts, have invented a new and useful Bagging-Machine, of which the following is a specification.

This invention relates to a bagging machine and particularly to certain improvements in a bagging machine of the type shown in United States Letters Patent No. 594,134, granted to me on November 23, 1897. This type of machine is most commonly used for bagging wool, shoddy, waste and other similar material, which comes to the machine in a very light and bulky condition. In order to impart the necessary density to the material it is necessary to feed separate portions into the bags and to compress the entire mass after each new portion is added.

The principal object of my present invention is to provide improved means for compressing the mass in the bag to a certain predetermined degree after each new portion is added and for automatically raising the pressing plunger as soon as this compression is attained.

Further objects of my invention are to provide a safety device for reversing the motion of the plunger whenever it approaches the extreme lower limit of its travel, and to provide an indicating device by which the approximate weight of the loaded bag can be ascertained.

With these and other objects in view my invention consists of certain devices, arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the ap pended claims.

A preferred form of my invention is shown in the drawings in which Figure 1 is a front elevation of my improved bagging machine; Fig. 2 is a sectional side elevation taken along the line 2-2 of Fig. 1 and looking in the direction of the arrows; and Figs. 3 and 4 are details which shall be hereinafter described.

Referring to the drawings, my improved machine comprises essentially a supporting device for holding a bag A, a vertically movable pressing plunger 10, and means for automatically controlling the movements of said plunger. The plunger 10 carries at its lower end a heavy cup-shaped casting 11 which is adapted to enter the open mouth of the bag and compress the material contained therein. A rack 12 (Fig. 2) is formed on or secured to the plunger 10 and meshes with a gear 13 mounted upon a horizontal shaft 14. The shaft 14 carries a second gear 15 (Fig. 1) meshing with a pinion 16 upon a second horizontal shaft 17. The shaft 17 is provided with a tight pulley 18 and two loose pulleys 19 and 20. The shafts 14 and 17 are supported in suitable bearings secured to the frame 13 of the machine and the shaft 17 is also provided with an outer bearing 21 supported upon a bracket 22 proecting from the side of the machine.

Straight and cross bolts 23 and 24 connect the shaft 17 with any suitable source of power, the position of the belts being controlled by shipper fingers 25 secured to a horizontally moving shipper rod 26 supported in bearing members 27 secured to the frame B. A hand lever 28 is pivoted upon a bracket 29 on the frame and has a slot and pin connection to the shipper rod 26. Near its left hand end, as seen in Fig. 1., the rod 26 is provided with a notch 30 so located that it will engage a fixed member 31 mounted upon the frame 13, whenever the shipper rod is moved far enough to the left to bring the belt 24 upon the tight pulley 18. A coil spring 32 encircles the shipper rod 26 and normally tends to move the shipper rod to its extreme right hand position.

The bag A is supported upon a vertically movable bag holder 33 which is held in its upper position by a plurality of compression springs 34. This construction is shown most clearly in Fig. 4, in which the adjust ing devices for the compression springs are shown in detail. The bag holder 33 is provided upon its circumference with a plurality of equally spaced depending projections 35 which inclose the springs 34 upon three sides. Upon the remaining side the springs are confined by depending brackets 36 secured to the frame of the machine or to the foundation upon which it is supported.

Lugs 37 serve to center the springs at their upper ends and their lower ends are similarly centered upon blocks 38 adapted to slide vertically within the depending members 35, and having conical depressions in their lower faces which receive the similarly shaped ends of the adjusting screws 39, check nuts 40 providing means for holding the screws 39 in adjusted position. It will be evident that the resistance of the springs 34 to the movement of the bag holder 33 may be varied at will by adjusting the height of the blocks 38. The bag holder 33 is also provided with an additional depending projection 41 adapted to contact with a lever 42 mounted upon a fixed pivot 43 and extending horizontally into the path of the said projection. The other end of the lever 42 is pivotally connected to a link 44 which is adjustably connected at its upper end to a second link 45. The link 45 is vertically,

movable in bearings 46 and 47 secured to the cross beams O of the machine frame. A casting 48 is secured to the link 45 and is provided with a transverse recess (Fig. 2) within which the shipper rod 26 is freely movable.

With this construction, it will be seen that the downward movement of the shipper rod 26 which occurs when the notch 30 is positioned above the member 31 will result in rocking the lever 42 upon its pivot 43, thus raising the right hand end of the lever toward the projection 41. At the same time the belt 24 is moved upon the tight pulley and revolves the shaftsl'? and 14 to cause the plunger to descend. As the plunger descends, the pressure of the plunger is exerted upon the mass of material in the bag and is transmitted through the bag to the bag holder 33. When the material in the bag attains a predetermined density it will resist further compression and the bag holder 33 will be forced downward against the pressure of the supporting springs 34. As the bag holder moves downward the projection 41 will depress the lever 42 thereby raising the links 44 and 45 and lifting the notch 30 above themember 31. The shipper rod is thus released and will be moved to the extreme right by the spring 32, thereby bringing the straight belt 23 onto the pulley 18 and reversing the movement of the plunger. As the plunger is raised a projection 49 thereon engages a cam plate 50 secured to the shipper rod 26 and forces the shipper rod to the left until both belts are upon the loose pulleys. At this point the projection 49 passes above the ledge 51 on the cam plate 50, permitting the shipper rod and cam plate to move slightly to the right and locking the plunger in raised position, as shown in Fig. 1.

The screws 39 provide means for varying the degree of compression to be attained within the bag before the reversing mechanism will be operated. Additional means for adjusting the reversing mechanism is provided by the connection between the links 44 and 45 shown in Fig. 3. A sleeve 52 is rigidly secured to the link 44 and is provided with screw threads upon its outer surface by which it engages an internally threaded sleeve 53. The link 45 has a horizontally extending portion at its lower end, provided with a hole fitting loosely over the upper end of the link 44, the link 45 being supported by the upper end of the sleeve 53. A check nut 54 is provided for retaining the parts 52 and 53 in adjusted relative position. By means of this adjustment the effective length of the connection between the casting 48 and the lever 42 may be adjusted, thus varying the amount which the shipper rod may descend as the notch 30 drops over the member 31. The upper end of the link 45 is perforated and engages a projection upon one end of a horizontal. lever 55 pivotally supported upon the beam 0 at 56. The upper end of'the plunger 10 has a laterally projecting member 57 upon which is supported a depending headed rod 58. A spring .59 is positioned between the head of the rod 58 and the member 57 and holds the rod normally as shown in Fig. 1. If the plunger 10 in its descent should not encounter suflicient resistance to depress the holder 33 and thereby release the shipper, the rod 58 will contact with the lever 55 as the plunger approaches the extreme lower limit of its travel and through the lever 55 will raise the shipper rod until it is released from the member 31 and is free to be moved to the right to reverse the motion of the plunger as previously described. The spring 59 permits a slight descent of the plunger during the reversing operation.

Having thus described my machine in detail it is thought that the operation thereof will be clearly understood but it may be briefly summarized as follows: After a portion of the material to be compressed has been placed within the bag A, the hand lever 28 is operated to move the shipper rod to the left until the notch 30 engages the member 31. The plunger then descends until its motion is automatically reversed by the lever 42 or by the lever 55, after which the plunger rises until its projection 49 engages the cam plate 50 and moves both belts upon the loose pulleys. The machine is then stopped with the plunger locked in raised position. It is sometimes desirable to ascertain roughly the amount of material which is being placed in each sack so that the degree of compression may be varied to increase or decrease the weight, and for this purpose I provide the indicating mechanism shown in Fig. 2. This mechanism comprises a graduated dial 60 secured to any convenient portion of the frame B and a pivoted pointer 61 having a pin and slot connection to an arm 62 longitudinally adjustable upon the'link .44. The vertical movement of the bag holder 33 results in a corresponding vertical movement of the link 4-4, which will be multiplied by the pointer 61. The extent of this movement may be determined by reference to the dial 60 which may be graduated to show the weight sustained by the bag holder 33. By adjusting the screws 39, the weight sustained by the holder in any posi tion may be caused to correspond approximately With the indication upon the dial. The degree of compression required to re lease the shipper may be thereafter adjusted by means of the sleeves 52 and 53 which may be used to vary the vertical position of the shipper rod and notch when the lever 42 rests in contact with the projection l1 in its normal position. The lower the notch is permitted to fall over the member 31, the greater travel of the holder 33 will be required to raise the notch above the member to release the shipper. Greater travel necessarily encounters greater resistance from the springs 3a which can only be overcome when the compression of the material is come spondingly increased.

Having thus described my invention it will be obvious that many changes can be made therein by one skilled in the art without departing from the spirit and scope of the invention as set forth in the claims, and I do not wish to be limited to the details herein shown but WVhat I claim is 1. A bagging machine having, in combination, a plunger, belt driven means for moving said plunger in two directions, a shipper rod having a notch, a latch for said shipper rod, means adjust: ble to control the distance which said latch may enter said notch, a movable bag support, and means controlled by movement of said support for releasing said latch.

2. A bagging machine having, in combination, a plunger, means for moving said plunger in tWo directions, a movable bag support, means controlled by the movement of said support for reversing the movement of the plunger, and additional means carried by the plunger for reversing its move- Copies of this patent may be obtained for five cents each, by addressing the ment Whenever it approaches the extreme lower limit of its travel.

3. A bagging machine having, in combination, a plunger, means for moving said plunger in two directions, a movable bag support, means controlled by the movement of said support for reversing the movement of the plunger, means operable by the bag.

support for indicating the weight of the bag and additional means to vary the releasing pressure.

4. A bagging machine having, in combination, a plunger, means for moving the plunger in two directions, a spring supported bag holder, means controlled by movement of the bag holder for reversing the direction of movement of said plunger, and means to vary the spring pressure under said holder.

5. A bagging machine having, in combination, a plunger, a rack and pinion for moving said plunger in two directions, a shipper, a spring to move said shipper in one direction, a latch to prevent movement of the shipper by the spring, a movable bag support, means controlled by movement of the bag support for releasing the latch and permitting the spring to move the shipper, a cam plate on said shipper and a lug on the plunger effective to move the cam plate and shipper positively to stop the motion of the plunger said plate and lug thereafter looking the plunger in raised position.

6. A bagging machine having, in combination, a plunger, means for moving said plunger in two directions, means for reversing the movement of said plunger when its pressure upon the bag attains a certain predetermined amount, and additional means for reversing the movement of the plunger whenever the plunger approaches the extreme lower limit of its travel.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

FRANK L. FUR-BUSH. Witnesses:

CHARLES Gr. SARGENT, ALLAN O. SARGENT.

Commissioner of I'atents,

Washington. D. 0. 

